EXPANSION VALVE FOR COOLING SYSTEM

摘要

PURPOSE: An expansion valve for a cooling system is provided to finely and linearly control the flow amount or pressure of a fluid with a simple structure by using the magnetic field of an electromagnet. CONSTITUTION: An expansion valve of the cooling system has: a housing(1) formed with a fluid inflow hole(2) and outflow hole(3), installed on the circulation route of the fluid; an elastic agent(4) fixed in a single arm support shape in the housing; a magnetic body(5) for opening and closing the fluid outflow hole, fixed on the other end of an elastic agent; a coil unit(6) for exciting the magnetic body by a current fed, wound up the hem of the housing; a drive circuit unit(7) for controlling the drive of the magnetic body by regulating the intensity degree of the current fed on a part of the coil.